Novel outdoor high-voltage fuse

Abstract

The invention relates to a novel outdoor high-voltage fuse, which comprises an upper static contact part (1), a support post part (3), a fusion tube main body part (4), a base part (2), an opening andclosing operation head (5), an upper end shield (6), a lower end shield (7), an incoming silicone tube (8) and an outgoing silicone tube (9). According to the novel outdoor high-voltage fuse, overcurrent can be reliably segmented; the contact performance and the mechanical strength are improved; the novel outdoor high-voltage fuse has a self-locking function; the fully-enclosed and fully-insulated design is achieved; and the service life of the novel outdoor high-voltage fuse is prolonged.

Description

technical field [0001] The invention relates to the high-voltage electrical field, in particular to a fully enclosed and fully insulated outdoor high-voltage drop-out fuse. Background technique [0002] Outdoor high-voltage fuses are line and equipment overcurrent and short-circuit protection, high-voltage power protection switches, and are also one of the main switching devices for distribution networks and rural power networks, and are widely used in various regions. In the process of mass use in various regions, there are many problems in the existing traditional drop-out fuses. First, the existing outdoor high-voltage drop-out fuses are fully exposed structures, which are greatly affected by the environment. The upper and lower contacts are exposed to the outside all the year round, and the corrosion will seriously affect its electrical conductivity and greatly shorten the service life. Some manufacturers address this defect by installing insulating sheaths on the upper...

AI Technical Summary

Problems solved by technology

In the process of mass use in various regions, there are many problems in the existing traditional drop-out fuses. First, the existing outdoor high-voltage drop-out fuses are fully exposed structures, which are greatly affected by the environment.

The upper and lower contacts are exposed to the outside all the year round, which seriously affects its electrical conductivity after corrosion and greatly shortens the service life

Some manufacturers address this defect by adding insulating sheaths to the upper and lower ends, but in order to facilitate installation, the insulating sheaths are snap-fitted, and the design of the insulating sheaths is wide, which increases the possibility of sundries or rainwater entering along the gaps.

Especially in winter, it will make the use environment of the product worse

Second, when there is a strong wind in coastal cities, some outdoor high-voltage drop-out fuses will be blown off by the strong wind, causing power outages on the line; third, the phenomenon of bird nesting is relatively serious, requiring frequent maintenance, wasting a lot of manpower and material resources, and endangering maintenance personnel safety

Existing high-voltage drop-out fuses can no longer meet the needs of the power grid

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